[Hot Item] Optical Customized Autocollimation Instrument Laser Analyzing Autocollimator

Ever wonder what perfect collimation looks like in a night-vision binocular? It's one of the most critical steps in the build process because the eyepieces are eccentric meaning they have an offset that allow the assembler to precisely merge both images into a single, clean view. When collimation isn't done correctly, you'll experience blur, double images, and eye fatigue. And here's the real question most people never ask: does your night-vision company even have a collimation test set? Without

Laser beam focusing - How to make Best laser focus!